Dispenser with cartridge aligning means



Feb. 20, 1968 v DEWEES ET AL 3,369,714

DISPENSER WITH CARTRIDGE ALIGNING MEANS Filed June 9, 1966 2Sheets-Sheet 1 ym/4M T. REY/V0405 7 1 3 @TQW ATTORNEY Feb. 20, 1968 v.E. DEWEES ET AL 3,369,714

DISPENSER WITH CARTRIDGE ALIGNING MEANS Filed June 9, 1966 2 SheetsSheet2 INVENTORS.

United States Patent M 3,369,714 DISPENSER WITH CARTRIDGE ALIGNING MEANSVincent E. Dewees, J enkintown, and William T. Reynolds,

Dresher, P2,, assignors to Kenmar Manufacturing Company, Philadelphia,Pa., 2 copartnership Filed June 9, 1966, Ser. No. 556,405 2 Claims. (Cl.222-327) ABSTRACT OF THE DISCLOSURE Dispensers for materials in drop-incartridges with or Without attached spouts in which the cartridge isretained in optimum alignment, by being held at the rear end duringdispensing, cartridges without spouts being accommodated by an adapterproviding a dispensing member which holds the front end of the cartridgecentered and against rupture and carries a dispensing spout.

This invention relates to dispensers for mastic materials such assealants, adhesives, caulking materials, grease and the like.

It has heretofore been proposed to provide dispensers for masticmaterials distributed in cartridges, which cartridges in some instanceshave spouts, or nozzles and in others have removable end closures, andwhich cartridges are adapted to be dropped into position for use.

The dispensers of the cartridge drop-in type heretofore available didnot retain the rear end of the cartridge against displacement. Theattendant misalignment of the cartridge in the dispenser caused leakageat the piston or even rupture of the cartridge.

It is the principal object of the present invention to provide adispenser for use with cartridges either with or without spouts ornozzles carried directly on the delivery end of the cartridge and inwhich the cartridge is held at the rear end in an improved manner.

It is a further object of the present invention to provide a dispenserfor use with drop-in mastic containing cartridges which cartridges canbe spout carrying cartridges, an adapter being provided for use withstandard nozzles.

It is a further object of the present invention to provide a dispenserfor use with drop-in mastic containing cartridges which is particularlyuseful for relatively longer and/or larger cartridges than thedispensers heretofore available.

Other objects and advantageous features will be apparent from thedescription and claims.

The nature and characteristic features of the invention will be morereadily understood from the following description taken in connectionwith the accompanying drawings forming part thereof, in which:

FIGURE 1 is a view in perspective of a dispenser in accordance with theinvention employing a spouted cartridge,

FIG. 2 is a longitudinal sectional view taken approximately on the line2-2 of FIG. 1;

FIG. 3 is a transverse vertical sectional view taken approximately onthe line 33 of FIG. 2;

FIG. 4 is a fragmentary longitudinal sectional view showing the detailsof the spout;

FIG. 5 is a view in perspective of the front end of the dispenser of thepresent invention with the adapter for a spoutless cartridge in place;

FIG. 6 is a fragmentary longitudinal sectional View, enlarged, takenapproximately on the line 66 of FIG. 5;

FIG. 7 is a transverse sectional view taken approximately on the line7-7 of FIG. 6; and I FIG. 8 is a fragmentary longitudinal sectional view3,369,714 Patented Feb. 20, 1968 of a cartridge having a removable endclosure and which is shown in FIG. 6 in condition for use.

It should, of course, be understood that the description and drawingsherein are illustrative merely, and that various modifications andchanges can be made in the structure disclosed without departing fromthe spirit of the invention.

Like numerals refer to like parts throughout the several views.

Referring first to FIGS. 1 to 4, inclusive, the cartridge C1 there shownis of well known disposable type with a hollow cylindrical Wall 10 witha smooth interior surface and of a spiral wound tube of paper, paperboard or the like. The wall 10 has a front end cap 11 of metal securedthereto and carrying a spout 12, preferably of flexible syntheticplastic material with a tapered closed end 13. The end 13 can be cutwith a knife (not shown) at the desired distance along the tapered end13 and at the desired angle in accordance with the dispensing opening 14which is desired. At the opposite end of the wall 10 an interiorcup-shaped piston 15 provides a closure.

Referring now to FIGS. 6 and 8 the cartridge C2 there shown is also ofwell known disposable type with a wall 10 as before and an end cap 16with a removable closure 17 normally frictionally held in position in afrustoconical ring 18 on the end cap 16. The opposite end of the wall 10has apiston 15 as before.

Referring now to FIGS. 1, 2 and 3, the dispenser preferably includes anelongated trough shaped magazine 20 with a flanged end stop 21 securedthereto in any desired manner at one end and with a forwardly flangedend receiver 22 at the other end. The end receiver 22 has a forwardlyextending flange 22a and at the rear has a fixed handle 23 securedthereto with side frame portions 24 which carry a pivotally mountedspring urged handle 25 on a pin 26 which through a pivotally mountedspring ratchet 27 on the handle 25 engages a piston rod 28 shown asnotched as at 29. The piston rod 28 has a piston plate 30 at one endthereof, for engagement in the piston 15, and a handle rod 31 at theother end for drawing the rod 28 backwards if desired, or for turningthe rod 28, if desired, for release.

A spring urged pivotally mounted ratchet 32 supported on a pin 33 by theside frame portions 24 prevents the undesired return of the rod 28.

The mechanism just described for actuating the piston rod 28 is of wellknown type and any other actuating mechanism can be employed if desired.

In accordance with the present invention the end stop 21 has a radiallyextending slot 35 with a forwardly extending internally threaded collar36 with a slot opening 37 the slot 37 being smaller in its transversedimension than the internal diameter of the collar 36 to provide aholding action.

With the piston rod 28 at its rearmost position the slot 35 and collar36 permit of the insertion of the spout 12 with the end cap 11 withinthe flanged end stop 21.

In accordance with the present invention the end receiver 22 has theflange 22a thereof extended forwardly so that when the cart-ridge C1 isseated as shown in FIGS. 1 and 2 the flange 22a overlaps the rear end ofthe cartridge C1 about three quarters of an inch to prevent itsdisplacement as the piston rod 28 is advanced with the piston plate 30engaged within the piston 15. Before the piston rod 28 is advanced byactuation of the movable handle 25 to a point to apply pressure to thepiston 15 the spout 12 is cut to provide the desired dispensing opening14.

The structure as heretofore described is suitable for dispensing fromspouted cartridges C1 with the cartridge C1 retained in the magazine 20during the entire advancing movement of the piston 15.

Upon completion of the dispensing or exhaustion of the contents of thecartridge C1 the piston rod 28 is released as by turning the notches 29to an inactive location, and the piston rod 28 is manually withdrawn toits rearmost positron.

The cartridge C1 can then be removed and a new cartridge C1 inserted asbefore.

If it is desired to employ a cartridge C2 as shown in FIG. 8, an adapteris utilized.

Referring now to FIGS. 5 t 8, inclusive, a sleeve 40 is provided havingan exterior threaded portion 41 en gageable in the threaded collar 36.The sleeve 40 has a knurled portion 42 beyond the threaded portion 41for manual engagement to facilitate insertion of the sleeve 40 in thecollar 36.

The sleeve 40 has a central passageway 44 threaded as at 45 at its outerend for carrying a nozzle 46 of conventional type. The sleeve 40 at theother end of the passageway is flared as at 47 for reception of the ring18.

An end abutment plate 50 is provided having an interior threaded opening51 with the threads tapered like pipe threads to limit the movement ofthe plate to a position where its rear face 52 is flush with the rearend of the sleeve 46. The assembly of plate 50, sleeve 40 and nozzle 46can, by turning of the sleeve 40 be positioned along the collar 36. Forinitial insertion of a cartridge C2 after removal of the closure 17, theabutment plate 50 is moved forwardly to the extent required to permitdropping the cartridge C2 into the magazine and then the assembly ofplate 50, sleeve and nozzle 46 is moved rearwardly by turning the sleeve49 until the rear face 52 of the plate engages the end cap 16. The plate50 is of a size so that it covers a substantial portion of the area ofthe forward end of the cartridge, thus transferring the thrust of thecartridge to the front of the dispenser without danger of distortion orpuncturing the end cap 16. The edges of this plate fit closely withinthe recess formed by the flange of cap 16 which joins the ends of wall10, thus ensuring proper radial and axial alignment of the cartridge.The ring 17 then engages in the flared passageway 47 and the dispenseris ready for use.

Actuation of the advancing mechanism from the piston rod 28 is effectivefor moving the piston plate 30 to impel the piston 15.

The cartridge C2 can be removed by a reversal of the operationspreviously described.

We claim:

1. In a dispenser having a trough shaped magazine for the insertion ofdisposable cartridge, said magazine having a rigidly connected front endwall with a slot at its front end providing an end stop and a rigidlyconnected cartridge end receiver having a rear end wall with piston rodactuating means at its rear end, the improvement which comprises forcartridges of shorter length than the distance between said end Walls,

means for retaining the front end of the cartridge against displacementfrom a predetermined axial and radial position, said means including acollar on said end stop, and a dispensing member engaged with saidcartridge and with said collar, said dispensing member including anexternally threaded portion engaging said collar and an abutment platecarried by said threaded portion, said abutment plate having a flat rearface with which the forward end of the cartridge is in thrusttransferring engagement over a substantial portion of the area of saidforward end, the edges of said plate having means to engage theperiphery of said end to align said cartridge, means for retaining therear end of the cartridge against axial misalignment when said front endof said cart-ridge is retained by said front end retaining means, saidlast means having a forwardly extending flange surrounding the rear endof the cartridge upon forward movement of said piston rod. 2. Adispenser as defined in claim 1 in which said abutment plate has aninternally threaded portion in engagement with said externally threadedportion, the threaded portion of said plate has the threads thereofshaped to limit the movement of the abutment plate with respect to theexternally threaded portion thereby to position the rear face of theabutment plate at the end of said externally threaded portion.

References Cited UNITED STATES PATENTS 2,098,377 11/1937 Dodge et al.222327 X 2,572,206 10/1951 Sherbondy 222327 2,634,889 4/1953 Sherbondy222-827 2,788,159 4/1957 Crewe 222-326 ROBERT B. REEVES, PrimaryExaminer.

HADD S. LANE, Examiner.

